Chapter 4: Nucleic Acids and the RNA World 1. 4.1 – What is a Nucleic Acid? * Nucleic acids are made up of monomers called nucleotides * Three components of a nucleotide: 1. Phosphate group—attached to the 5’ carbon 2. Sugar – carbonyl group and several hydroxyl groups 3. Nitrogenous base * The prime (‘) symbols indicate the carbon being is part of the sugar—not attached to the nitrogenous base. * Four different nucleotides‚ each of which contains a different nitrogenous
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Prepared by Prepared for Group 4 Syed Munir Khasru Section B Professor Mushreka Afroze Khan (RH- 68) Sawmik Islam (ZR- 78) Jidny Rubaiyat Shoummo (ZR-85) Lubzana Afrin (RH- 94) Mehnaz Fatima Khan (RH-107) Arman Pavel (ZR-120) Date of submission: December 19‚ 2012 Institute of Business Administration University of Dhaka December 19 2012 Syed Munir Khasru Institute of Business Administration University
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A carbohydrate is an organic compound that consists only of carbon‚ hydrogen‚ and oxygen‚ usually with a hydrogen:oxygen atom ratio of 2:1 (as in water); in other words‚ with the empirical formula Cm(H2O)n. The carbohydrates (saccharides) are divided into four chemical groupings: monosaccharides‚ disaccharides‚ oligosaccharides‚ and polysaccharides. In general‚ the monosaccharides and disaccharides‚ which are smaller (lower molecular weight) carbohydrates‚ are commonly referred to as sugars.
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PHYSICS The nuclear atom All matter is made up of atoms which consist of a central nucleus‚ surrounded by electrons. Inside the nucleus are protons and neutrons. Particle Relative mass Charge Location Proton 1840 + Nucleus Neutron 1840 0 Nucleus Electron 1 - Outside nucleus Proton or atomic number (Z) This is the total number of protons in the nucleus of an atom. Nucleon or mass number (A) This is the total number of protons and neutrons in the nucleus of an atom. Note: a nucleon is
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The Uses of water in Living Things Topics I have chosen to cover: - Osmosis & Water potential - Condensation & Hydrolysis Reactions - Digestion – the importance of water - Blood and tissue fluid To emphasise the sheer importance of water in living things and to put the content of this essay in to perspective‚ I am firstly going to inform you that the human body is approximately 50-75% water. Without water our body would be unable to successfully perform the numerous complex reactions and
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September. 19/2013 10. Atom: Smallest particle of an element that displays the properties of that element. 11. See page 12. a) Ionic bonds are chemical bonds in which ions are attracted to each other by opposite charges. b) Covalent bonds are chemical bonds in which atoms share one pair of electrons. c) Hydrogen bonds are weak that aries between a slightly positive hydrogen atom of one molecule and a slightly negative atom of another molecule or between two
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Ozone Layer Depletion [ Language & Communication Skills ] Contents Abstract | 1 | Introduction | 2 | Findings: Factor of ozone depletion | 3 | Effect of ozone depletion | 4 | Solution of ozone layer | 5-6 | Conclusion | 7 | Recommendation | 8 | References | 9-10 | Appendices | 11-13 | Bibliography | 14 | Abstract Ozone is concentrated in the ozone layer ‚ which is located in the stratosphere. It plays an important role to protect humans and
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NUCLEAR ENERGY Nuclear energy is the energy contained in the centre ‚ or nucleus of an atom. The nucleus is the most powerful source of energy that exist. Nuclear energy is use in scientific research and in medicine treatments. It powers satellites and submarines‚ and it is used to produce electricity. People have also put nuclear energy to destructive uses through the creation of weapons.1 Nuclear energy also called ATOMIC ENERGY‚ energy
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most common preparation method is by reacting alcohol with hydrogen halides in extremely acidic environments. In this production method‚ tertiary alcohols were recommended to be used because of the stability and relative strength of the tertiary carbocation. Halogens will substitute with the hydrogen atoms to form alkyl halides through SN1 reactions. Experimental Detail Before all else‚ the materials and the simple distillation set-up were prepared. 10 mL tert-butyl alcohol and 20 mL cold concentrated
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Until the discovery of Bucky ball‚ the graphite and diamond were the only molecules formed using carbon atoms. Even though the founder of Bucky ball was curl‚ Kroto and Smalley‚ the fullerene molecule was named after Richard Buckminster fuller (1895-1983) an famous architect‚ because the structure of Bucky ball looks same as that of the geodesic dome constructed
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